Card-inserting attachment for wrapping machines



July 23, 1929. M. E. FOERNSLER CARD INSERTING ATTACHMENT FOR WRAPPING MACHINES Filed July 14, 1927 F INVENTOR ATTORNEY Wa z" Patented July 23, 1929.

UNITED STATES 1,721,552 PATENT OFFICE.

MAX E. FOERR'SLER, or RICRMoNn HILL, NEW YORK, AssIGNoR '10 AMERICAN MA- CHINE & FOUNDRY COMPANY, A CORPORATION OF NEW JERSEY.

CARD-INSERTING ATTACHMENT FOR WRAPPING MACHINES. Y

Application filed Iuly 14,

This invention relates to a card inserting attachment for wrapping machines, particularly for bread wrapping machines having a runway along which the loaves of bread to be wrapped are fed, and from which they are forwarded into position to be wrapped. With this and other objects not specifically mentioned in view, the invention consists in certain constructions and combinations which will be hereinafter fully described and then specifically set forth in the claims hereunto appended.

In the accompanyin drawings, which 'form a part of this specification and in which like characters of reference indicate the same or like parts, Fig. 1 is a side elevation of an attachment constructed in accordance with the invention;Fig. 2 is a plan view of the structure shown in Fig. 1; Fig. 3 is a side elevation of the card magazine and feeding device; Fig. 4 is an end view of the article plunger .and card holding device which comes into action at the beginning of. the wrapping operation; Fig. 5 is a side elevationof the device shown in Fig. 4 when in position toreceive an assembled articleand card; and Fig. 6 is a view similar to Fig. 5, but showing the parts in the position they occupy at the beginning of the wrappingoperation.

In carrying the operation into effect, there is provided a runway along which articles to be wrapped are fed by gravity or by mechanical means, means for successively assembling cards with articles arriving at the end of said runway, and travelinv means crossing said end for successively orwarding assembled articles and cards from .said runway into position to be wrapped. In the best constructions contemplated, there is further sembled articles and cards out of the path of the forwarding means during the first part of the wrapping operation; and the forward ing means comprises a chain provided with spaced lugs engaging the rear of the articles, and guide rails alongside the path of said chains for holding the cards against the articles as the latter are forwarded by said lugs into position to be wrapped.

Referring to Figs. 1, 2 and 3, the series of rods numbered '7, 8, 9 and 10, which are carried by the frame 11 of the wrapping machine, support the card inserting attachment, the card magazine being carried by a provided means for moving the as 1927. Serial No. 205,553.

bracket 13 which is clamped to therods 7 and 8, and the card holding device being part of the article plunger which slides in the frame 14 suspended from the rods 9 and 10.

The card magazine has adjustable corner pieces 12and a stationary front wall 15, the corner pieces 12 being clamped to rods 16 carried by an adjustable post 17 so that they may be moved sidewise, toward or away from each other, by loosening the clamp screws 18, and lengthwise, toward or away from the front wall 15, by loosening a nut 19 which holds the post 17 in a slot provided for this purpose in the base plate 20, thereby causing themagazine to be adjustable to receive insert cards of different sizes.

To insure the successive removal of the cards from the magazine, the stack of cards 21 rests on a knife 22 mounted in a block 23, the pressure of the stack upon the knife being kept substantially constant by a weight 24 resting on the stack, in such manner that the shearing force required to tear the second card from the knife edge is greater than the friction between the bottom card and the secso 0nd card at the time when the bottom card is pulled out by the takeofi' roller 25. The weight 24 is provided with projecting prongs 26 which engage a dovetailed slide 27 formed on the post 17 so that the weight is in the same 85 position over the knife 22 for any adj ustment of the magazine walls. To prevent the weight from engaging the knife when the stack 21 is very low, a suitable recess 28 is formed in the under side of the weight.

The take-ofi roller 25 is supported in the magazine frame 29 which carries the base plate 20 and the magazine walls 12 and 15, and which is mounted on a post 30. The post 30 is adjustably supported in the bracket 13 by means of a key 31 and stop screw 32,

the latter being carried by a clamp angle 33 secured to the bracket 13 by means of-a screw 34. By means of the angle 33, the bracket 13 is clamped to therod 8 after the lengthwise positionof the magazine has been properly adjusted by. the set screws 35 of the bracket 13. The outer end of the. bracket 13 is clamped to the rod 7 by means of a bar 36 and screws 37.

The take-oil roller 25 is driven, in. synchronism with the step-b -step movement of the lugs 38, from a sprocket 39, Fig. 3, attached by a specialmounting'to the end of the shaft 40 of the wrapping machine, the 110 sprocket 39 being mounted on a pin 41 whose head 42 is attached to the hub of the gear 43 mounted on the end of the shaft 40 and forming a part of the wrapping machine drive. The sprocket 39 is loose on the pin 41 and for operation is coupled to the head 42 by means of a pin 44. The sprocket 39, by means of a chain 45, drives the sprocket 46 on an auxiliary shaft 47 supported by a bracket 48 from the rod 8, the chain 45 running over an idler 49 attached to the rod 7. A sprocket 50 on the shaft 47, by-means of a chain 51, drives a sprocket 52, from which the take-off roller 25 and lower guide roller '53 receive their motion through gears 54, 55 and 56. The

upper guide roller 57, which is supportedfrom the front wall 15 of the magnazine, is

' not driven.

card out of the To the magazine frame 29 is secured a curved-fork 58, and to the magazine front wall 15 is secured a curved fork 59, which guide a card emerging from the magazine into the end of a runway along which the articles to be wrapped are fed, the card 60 fall'- ing on edge in front of the end wall 61 as an article 62 coming down the chute or runway 63 approaches the same. As each forwarding lug 38, carried by a chain forming a part of the wrapping machine mechanism and not shown in the drawings, crosses the end of the runway 63 and moves an article into position to be wrapped, the card is carried along by its frictional contact with the article and guided by uide rails or wires 65 alongside the path 0 the lugs 38. It is to be under? stood that the friction between the card and the guide rails 65 is less than that between the card and the article to be wrapped, so

that the articles carry the cards along with them.

When an assembled article and card has been forwarded into position opposite the wrapping mechanism, the plunger 66, being properly timed, pushes the article 62 and the path of the forwarding means during the first part of the Wrapping operation. In order to hold the card 60 against the article 62, while the latter is being raised by the wrapping table 67, the plunger 66 (Figs. 4 to 6), which is actuated by a lever 68 attached by means of a link 69 to a bar 70, is provided'with a movable plate .71 so attached that it will remain in contact with the card and article as the plunger 66 recedes, until the wrapping operation has sufficiently progressed to cause the wrapper 72 to partly envelop the inserted card. For this purpose, the plate 71 is provided with a spring 73 and mounted'on a rod 74, slidable in posts 75 and 76 secured to the bar 70, the

relative longitudinal movement of the rod 74 being controlled by a lever 77 pivoted to the bar and sliding in an inclined position on a stationary bar 78 fastened to the frame 14. The lever 77, by pressing against a collar 79 on the rod 74, holds the plate 71 flush with or within the face of the plunger 66 as long as the lower end of the lever 77 rests on the bar 78, the compression spring 80 on the rod 74 then being held in tension. As soon as the lever 77 reaches the ledge 81 of the bar 78, its lower end drops and allows it to hang vertically, thereby releasing the spring 80 just before the plunger 66 has reached the end of its forward stroke. The extreme position of the plunger is shown in dotted lines in Fig. The plate 71 will then bear against the card 60 on the article 62 the remainder of the stroke and will remain in contact with it while the plunger-66 recedes until the lever 77 again engages the ledge 81 of the bar 78 when it will be forced to turn into its former inclined position, and in so doing push the plate 71 back into the face of the plunger 66. During the interval of contact of the plate 71with the card and article, the table 67 has raised the article 62 into the position shown in full lines in Fig. 6, the card 60 then having been carried up with the article, so that it is now held, or at least prevented from falling over, by the wrapper 22 while the article is pushed up into its uppermost position in which the wrapper completely envelope the inserted card. To.

prevent the plate 71 from turning in the bearings of the rod 7 4, it is provided with aguide pin 82 sliding in a post 83 attached to the bar 70. The piyot of the lever 77 is made with a threaded end carrying a handled nut 84. By this means the lever 77 may be readily locked in its inclined position when the card inserting attachment is not in use.

In View of the foregoing, a detailed description of the operation of' the device is deemed to be unnecessary, and is therefore omitted. I

What is claimed is:

1. The combination'with a runway along which articles to be wrap ed are fed, of 'means for successively assem ling cards with articles arriving at the end of said runway, and traveling means crossing said end for successively forwarding assembled articles and cards from said runway into position to be wrapped.

2. The combination with a runway along which articles to be wrapped are fed, of means 4. The combination with a runway along which articles to be wrapped are fed, of a card magazine, means for successively feeding cards from said magazine and assembling them with articles arriving at the end of said 10 runway, and traveling means crossing said end for successively forwarding assembled articles and cards from said runway into position to be wrapped.

In testimony whereof, I have signed my 15 name to this specification.

MAX E. FOERNSLER. 

